Manufacture of corner angles of roof gutters



Jan. 24, 1928. 1,657,425

J. E. WHEELER MANUFACTURE OF CORNER ANGLES OF ROOF GUTIERS Filed Jan, 1926 Patented Jan. 24, 1928.

UNITED STATES PATENT OFFICE.

JOHN EDWARD WHEELER, OF DUNEDIN, NEW ZEALAND.

MANUFACTURE OF CORNER ANGLES OF ROOF GUTTEBS.

Application filed January 2, 19

This invention relates to improvements in corner angles of roof gutters made from sheet metal and is directed to the provision of corner angles of gutters formed with vertical in- 5 ner walls, a flat bottom and curved outer walls.

In affixing sheet metal gutters of the above s of buildings, it form the corners by cutting the gutters bisecting the angle to then soldering or otherwise fastening the two said parts together.

This operation is the plumber erecting skilled workmanship to pr generally performed by the gutter and involves ovide a neat appearance and, at the same time, ensure a strong and circular bends in the it is the usual practice abov to f water-tight joint.

In effecting e type of gutter orm the same by joining together several gusset shaped pieces of gutter, each of which has to be out very accurately in order to ensure symmetry of ourvature at the bend, and which are, therefore,

relatively costly to manufacture.

I am aware that it has been proposed to stamp corner angles for gutters in one piece but whilst this can be accomplished more or less satisfactorily when the gutter is of a comparatively more or less regularly not commerclally practicab shallow concavo-coi1vex or curved formation it 1s le when the gutters are provldedwith a vertical inner wall and are relatively deep in cross section.

Now the ob ect of the present inventlon is to provide means whereby corner I angles of roof gutters or other sheet metal gutters having vertical inner walls may be manufactured economically to conform to the particular corner to be negotia sharp angular structures and the ted, avoiding the joints there in as at present adopted, whilst, at the same time, enabling them to be p tity in a factory and used roduced in quanready-made on a building, thus effecting a considerable saving of time and labour in affixing the gutters.

I accomplish the above mentioned ob ect by forming corner angles made from a plurality of angle shaped-metal blanks the parts comprising an outer wall (0 urved in plan) to compass the required angle and shaped in cross section to the required pattern and design, quired angle, and a flat an inner vertical wall bent to the rebottom,

the parts having their contiguous edges conneetedtogether so that the corner an gle formed thereture thereof.

26, Serial No. 78,982, and in Australia January 13, 1925.

by will be substantially of the same size and shape in cross section as the lengths of gutters to be connected thereby.

In order that the invention may be better understood reference will now be had to the accompanying sheet of drawings wherein one method is illustrated of giving effect to this invention.

Figure 1 is a view in plan of portion of a roof provided with a gutter having the cor ner angles thereof constructed and arranged in accordance with the present invention.

Figure 2 is a View in plan (drawn to a larger scale) of the corner for a salient angle shown in Figure 1. t

Figure 3 is a view in sectional elevation of the corner angle taken on the dotted line 3-3 of Figure 2. 1

Figure 4 is a view in perspective of portions of the corner angle shown in Figures 2 and 3 and illustrates a stage in the manufac- Figure 5 is aview similar to Figure 3 and shows a modification of the invention.

Figure 6 is a view in plan of a corner for a re-entrant angle as shown in Figure 1 and drawn to a larger scale. t

Figure 7 is a view in sectional elevation of the corner angle taken onthe dotted line 7*? of Figure 6. I

Figure 8 is a view in perspective of the inner wall and bottom portion of the corner angle shown in Figure 6 and illustrates a stage in the construction thereof.

Figure 9 is view'in sectional elevation taken on the dotted line 9-9 of Figure 6.

Referring to Figure 1 of the drawings, (i, represents a portion of a roof (in plan) provided at its outer and lower edges with a gutter which is connected thereto in any approved manner. i The straight lengths of gutter b are connected by corner angles, formed of a plurality of angle shaped parts made from blanks Each of these corner angles may comprise three separately formed parts, namely, an outer wall 0, an inner wall (Z and bottom a conveniently joined together along their contiguous longitudinal edges; or the bottom e may be integral with the outer wall (Z (Fig ure 5) or the bottom 6 may be integral with the inner wall 0 (Figure 7).

The formation of a salient angle by one adaptation of this nvent on is shown 1n Fi ures 2 and 3. In these views the outer wal c is shaped as a convex curve (as shown at c Figure l) by suitable dies and presses preferably in two forming operations from a blank of approved shape to conform to the cross section of the corresponding parts of a length of spouting. In the first operation a fold 0 is formed along the bottom edge and the rest of the section excepting the upper portion is shaped to the desired configuration as indicated in Figure 3 of the drawings. In the second operation the upper portion is bent over to complete the formation of a bead c which conforms in shape to a bead on the gutter wall of the straight lengths of the gutter.

If desired the procedure may be reversed and the head a and outer wall completed. in the first forming operation the fold 0 being then formed in a succeeding opera tion.

The formation of the outern'all o to the shape shown in Figure 3 has been found to be a simple operation by following the methods usually employed in the stamping and pressing of sheet metal by dies and presses.

The inner wall (Z is formed from a blank of sheet metal being bent to an angle of the required degree to suit the position where it is to be affixed and a fold (Z is formed at the bottom edge thereof in anywell known way.

In like manner the bottom piece a is formed from a blank; of sheet metal shaped to conform to the desired angle and a flange e is turned downwardly on the inner edge thereof and another flange 0 is turned upwardly on the outer edge thereof (see F igure 4).

The flange 6 of the bottom iece e is adapted to correspond with and be accommodated by the fold a of the outer wall and likewise the flange e of the said bottom 6 is adapted to correspond with and be engaged by the fold al formed on the lower portion of the inner wall. i

i The members are thenrigidly connected one to the other by a seam closing press or the like, the joining of the folds and e forming one longitudinal seam and the joining of the folds 0i and a forming another longitudinal seam.

In the case of a re-entrant angle the outer Wall 0 is shaped to a concave curve as shown at o in Figure 1 and preferably in two operations as above described. in connection with the formation of a salient angle. Insteadof forming the angle of three separate blanks as previously described with regardto a salient angle, in the case of a re-entrant angle it is preferably made of two parts as shown in Figures 6, 8 and 9.

.Theinner wall (1 and bottom (2 in this case are shaped by simultaneously bending andplaiting the metal blank to produce the. requisite angular form, the plaited portion 6 of the bottom 6 being pressed flat to enable a satisfactory junction to be made with the outer Jart of the corner angle (see Figures 6, 8 an 9).

The corner angle is then completed by attaching the outer wall 0 to the edge of the bottom 6 by a seam joint as hereinbefore described.

Figure 8 shows a stage in the 'ilaitiug operation of the bottom 0 formed integrally with the inner wall (Z and it will he raiderstood that in this construction the danger of leakage is avoided.

It will be understood that the parts forming the corner angle may be joined together in any well known manner instead of sea1ning as shown, such as by welding, riveting, soldering or any other means.

The portions of a corner angle may be gah'anizcd before they are joined togetlun: or alternatively they may be galuinized after they have been so joined, and, in prartice, we find the latter procedure more dosirable as water-tight joints and seams are thereby ensured.

If preferred the outer walla and the bottom a of a corner angle can be formed integrally and in this case the inner edge of the bottom can be formed with downwardly projecting flange e adapted to be seam folded to the bottom edge of the inner wall (Z (see Figure 5). The inner wall in this instance can be siaped with a flange d on its lower edge.

Although right angle corners having the inner sides thereof bent sharply at are illustrated in the drawings, it will be obvious that the invention may be applied with equal facility to corner angles which are greater or less than a right angle and which may have the inner angles rounded. Moreover, the curvature of the outer walls (in plan) of the corner angles can be varied as desired to permit of a free flow of water around corners of gutters.

Corner angles for roof gutters constructed in accordance with the invention can be manufactured economically, will be neat in appearance, and can be readily connectedto lengths of gutters in the ordinary wa when the same are being applied to buildings in course of erection.

1. A corner angle for roof gutters of the kind described having a vertical inner wall, a flat bottom and a curved'outer wall, comprising a plurality of separately formed angle shaped pieces of sheet metal joined along their longitudinal edges to conform in shape to the cross section of a roof gutter.

2. A corner angle for roof gutters of the kind described having a vertical inner wall, a flat bottom and a curved outer wall, coinprising a plurality of separately formed angle shaped parts of sheet metal having their longitudinal edges connected to each other, the outer Wall portion of the corner angle being curved (in plan) and the inner vertical Wall portion being bent to the angle to be negotiated by the corner.

3. A corner angle for roof gutters of the kind described having a vertical inner Wall, a fiat bottom, and a curved outer Wall, comprising separately :Eormed inner and outer Wall parts and a bottom part, the inner part being disposed vertically, the bottom part horizontally, and the outer part having a curved formation in plan, said parts having their longitudinal edges connected together.

4:. A corner angle for roof gutters of the kind described, comprising a plurality of parts formed from sheet metal blanks, said parts comprising respectively, an outer Wall curved in plan to encompass the required angle, a vertical inner-Wall bent to the angle required, and a fiat bottom, the contiguous edges of the said parts being connected together.

5. A salient corner angle for roof gutters of the kind described made of a plurality of angle shaped parts formed from sheet metal blanks, and comprising respectively, an outer Wall of convex formation, an inner vertical Wall bent to the angle required, and a flat bottom, the contiguous edges of the said parts being connected together in such manner that a cross section of any part of the corner angle conforms to the cross section of the lengths of gutters adapted to be joined by the corner angle.

6. A corner angle for roof gutters of the kind described formed of an outer section of sheet metal shaped to the curve required in plan and of cross section tothe pattern or design required, a fold along the bottom edge of the outer section, an inner vertical section of sheet metal bent to a sharp angle of the degree required, a fold along the bottom edge of the inner vertical section, a flat bottom section of sheet metal of the shape required to unite the said sections, and folds along both the edges of the bottom section, the said sections being united together by forming seams along the folds on the contiguous edges thereof, substantially as described.

In Witness whereof I hereunto afix my signature.

JOHN EDWARD WHEELER. 

